A、reduce air charge turbulence
B、induce air swirl
C、deflect hot combustion gas away from the valves
D、oppose the effects of piston induced squish
更多“Directional intake ports in diesel engines are used to （）.”相关的问题
A、the beveled edges of the intake valves provide for serf-centering during seating B、intake valves utilize stellite-coated valve seat inserts which reduce wear C、the volume of air passing through intake valves is less than the volume of air passing through exhaust valves D、intake valves are less affected to the corrosive action of exhaust gases
A、Optical fiber B、Access point C、Directional antenna D、Omni-directional antenna
A、Optical fiber B、Access point C、Omni-directional antenna D、Directional antenna
A、A.Optical fiber B、B.Access point C、C.Omni-directional antenna D、D.Directional antenna
A、A.［泛光灯（Omni）］ B、B.［目标聚光灯（Spot）］ C、C.［天光（Sky）］ D、D.［平行光（Directional）］
A、At zero load the intake manifold pressure is greater than the exhaust manifold pressure B、At full load the intake manifold pressure and exhaust manifold pressure are equal C、At full load the intake manifold pressure is less than the exhaust manifold pressure D、At full load the intake manifold pressure is greater than the exhaust manifold pressure
A、power and intake B、intake and exhaust C、exhaust and compression D、compression and power
A、A. Replace the wireless bridges with wireless access points. B、B. Install bi-directional amplifiers at both sites. C、C. Configure channel hopping on both wireless bridges. D、D. Replace the omni-directional antennas with Yagi antennas
A、decreasing the amount of valve overlap B、preheating the air intake C、after-cooling the intake air D、preheating light fuel
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